function getSearchField(type){
		document.getElementById("search_sub").innerHTML = "";
		var html = "";
		if(type == "all"){
			html = "<li ><a href='#'>全文</a></li>" +
					"<li ><a href='#'>标题</a></li>" +
					"<li ><a href='#'>作者/机构</a></li>" +
					"<li ><a href='#'>关键词</a></li>" +
					"<li ><a href='#'>主题词</a></li>" +
					"<li ><a href='#'>摘要</a></li>" +
					"<li ><a href='#'>中图分类</a></li>";
		}else if(type == "Book"){
			html = "<li ><a href='#'>全文</a></li>" +
			"<li ><a href='#'>标题</a></li>" +
			"<li ><a href='#'>作者/机构</a></li>" +
			"<li ><a href='#'>关键词</a></li>" +
			"<li ><a href='#'>主题词</a></li>" +
			"<li ><a href='#'>摘要</a></li>" +
			"<li ><a href='#'>ISBN/ISSN</a></li>" +
			"<li ><a href='#'>中图分类</a></li>";
		}else if(type == "ImageTable"){
			html = "<li ><a href='#'>全文</a></li>" +
			"<li ><a href='#'>标题</a></li>" +
			"<li ><a href='#'>作者/机构</a></li>" +
			"<li ><a href='#'>关键词</a></li>" +
			"<li ><a href='#'>主题词</a></li>" +
			"<li ><a href='#'>摘要</a></li>" ;
		}else if(type == "Video"){
			html = "<li ><a href='#'>全文</a></li>" +
			"<li ><a href='#'>标题</a></li>" +
			"<li ><a href='#'>关键词</a></li>" +
			"<li ><a href='#'>主题词</a></li>" +
			"<li ><a href='#'>摘要</a></li>" ;
		}else if(type == "News"){
			html = "<li ><a href='#'>全文</a></li>" +
			"<li ><a href='#'>标题</a></li>" +
			"<li ><a href='#'>关键词</a></li>" +
			"<li ><a href='#'>主题词</a></li>" +
			"<li ><a href='#'>摘要</a></li>" +
			"<li ><a href='#'>来源</a></li>" ;
		}else if(type == "Wiki"){
			html = "<li ><a href='#'>全文</a></li>" +
			"<li ><a href='#'>标题</a></li>" +
			"<li ><a href='#'>关键词</a></li>" +
			"<li ><a href='#'>主题词</a></li>" +
			"<li ><a href='#'>摘要</a></li>" +
			"<li ><a href='#'>来源</a></li>" ;
		}else {
			html = "<li ><a href='#'>全文</a></li>" +
			"<li ><a href='#'>标题</a></li>" +
			"<li ><a href='#'>作者/机构</a></li>" +
			"<li ><a href='#'>关键词</a></li>" +
			"<li ><a href='#'>主题词</a></li>" +
			"<li ><a href='#'>摘要</a></li>" +
			"<li ><a href='#'>中图分类</a></li>";
		}
		document.getElementById("search_sub").innerHTML = html;
		showSelect();
	}
	
	function getSearchFieldCode(field){
		if("全文" == field){
			field = "All";
		}else if("标题" == field){
			field = "searchTitle";
		}else if("作者/机构" == field){
			field = "authors";
		}else if("摘要" == field){
			field = "summary";
		}else if("关键词" == field){
			field = "keyWords";
		}else if("主题词" == field){
			field = "subjectWords";
		}else if("中图分类" == field){
			field = "clcCode";
		}else if("来源" == field){
			field = "Source";
		}else if("ISBN/ISSN" == field){
			field = "ISBN";
		}else if("书名" == field){
			field = "BookName";
		}
		return field;
	}
	
	function getSearchFieldName(field){
		if("searchTitle" == field){
			field = "标题";
		}else if("authors" == field){
			field = "作者/机构";
		}else if("summary" == field){
			field = "摘要";
		}else if("keyWords" == field){
			field = "关键词";
		}else if("subjectWords" == field){
			field = "主题词";
		}else if("clcCode" == field){
			field = "中图分类";
		}else if("Source" == field){
			field = "来源";
		}else if("ISBN" == field){
			field = "ISBN/ISSN";
		}else if("BookName" == field){
			field = "书名";
		}else{
			field = "全文";
		}
		return field;
	}